Each of the eigenfunctions of the angular momentum of a quantum-mechanical system (as a subatomic particle), the sum of which is equal to the wave function of the system (i.e. the general solution of Schrödinger's equation for the system).
Origin
1950s.
Definition of partial wave in US English:
partial wave
noun
Physics
Each of the eigenfunctions of the angular momentum of a quantum-mechanical system (as a subatomic particle), the sum of which is equal to the wave function of the system (i.e. the general solution of Schrödinger's equation for the system).